/* ==========================================================================
   Theme: modern dark
   Layout comes from the Bootstrap grid; everything visual lives here.
   ========================================================================== */

:root {
	--bg: #0b0f17;
	--surface: #111722;
	--surface-2: #161e2c;
	--border: rgba(255, 255, 255, 0.08);
	--border-strong: rgba(255, 255, 255, 0.16);
	--text: #e6e9ef;
	--muted: #98a2b3;
	--accent: #4cc9f0;
	--accent-2: #7b8cff;
	--accent-soft: rgba(76, 201, 240, 0.12);
	--success: #3ddc97;
	--success-soft: rgba(61, 220, 151, 0.12);
	--warning: #f5b76a;
	--warning-soft: rgba(245, 183, 106, 0.12);
	--radius: 14px;
	--font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
	--font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
	--header-height: 68px;
}

html {
	scroll-padding-top: var(--header-height);
}

body {
	background: var(--bg);
	color: var(--text);
	font-family: var(--font-sans);
	font-size: 16px;
	line-height: 1.65;
	-webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5 {
	color: var(--text);
	font-weight: 700;
	letter-spacing: -0.02em;
}

a {
	color: var(--accent);
	text-decoration: none;
	transition: color 0.2s;
}

a:hover {
	color: #8adcf6;
}

::selection {
	background: var(--accent);
	color: var(--bg);
}

.text-muted-2 {
	color: var(--muted);
}

.mono {
	font-family: var(--font-mono);
}

/* ---------- Buttons ---------- */

.btn-accent,
.btn-ghost {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	padding: 0.7rem 1.25rem;
	border-radius: 10px;
	font-weight: 600;
	font-size: 0.95rem;
	transition: transform 0.2s, background 0.2s, border-color 0.2s, color 0.2s;
}

.btn-accent {
	background: var(--accent);
	color: var(--bg);
	border: 1px solid var(--accent);
}

.btn-accent:hover {
	background: #7ad6f4;
	color: var(--bg);
	transform: translateY(-1px);
}

.btn-ghost {
	background: transparent;
	color: var(--text);
	border: 1px solid var(--border-strong);
}

.btn-ghost:hover {
	border-color: var(--accent);
	color: var(--accent);
	transform: translateY(-1px);
}

.icon-link {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 44px;
	height: 44px;
	border-radius: 10px;
	border: 1px solid var(--border-strong);
	color: var(--text);
	font-size: 1.15rem;
	transition: border-color 0.2s, color 0.2s, transform 0.2s;
}

.icon-link:hover {
	border-color: var(--accent);
	color: var(--accent);
	transform: translateY(-1px);
}

/* ---------- Chips & pills ---------- */

.chip-list {
	display: flex;
	flex-wrap: wrap;
	gap: 0.4rem;
	margin: 0;
	padding: 0;
	list-style: none;
}

.chip {
	font-family: var(--font-mono);
	font-size: 0.72rem;
	color: var(--muted);
	background: var(--surface-2);
	border: 1px solid var(--border);
	border-radius: 6px;
	padding: 0.2rem 0.5rem;
	line-height: 1.4;
}

.pill {
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	font-family: var(--font-mono);
	font-size: 0.7rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	border-radius: 999px;
	padding: 0.25rem 0.65rem;
}

.pill::before {
	content: "";
	width: 6px;
	height: 6px;
	border-radius: 50%;
	background: currentColor;
}

.pill-live {
	color: var(--success);
	background: var(--success-soft);
}

.pill-private {
	color: var(--warning);
	background: var(--warning-soft);
}

.pill-new {
	color: var(--accent);
	background: var(--accent-soft);
}

/* ---------- Header ---------- */

.site-header {
	height: var(--header-height);
	display: flex;
	align-items: center;
	background: rgba(11, 15, 23, 0.6);
	backdrop-filter: blur(12px);
	-webkit-backdrop-filter: blur(12px);
	border-bottom: 1px solid transparent;
	transition: border-color 0.3s, background 0.3s;
	z-index: 1000;
}

.site-header.header-scrolled {
	background: rgba(11, 15, 23, 0.85);
	border-bottom-color: var(--border);
}

.logo {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 38px;
	height: 38px;
	border-radius: 10px;
	border: 1px solid var(--border-strong);
	font-family: var(--font-mono);
	font-weight: 700;
	font-size: 0.9rem;
	color: var(--text);
}

.logo:hover {
	color: var(--accent);
	border-color: var(--accent);
}

.navbar {
	padding: 0;
}

.navbar ul {
	display: flex;
	align-items: center;
	gap: 0.25rem;
	margin: 0;
	padding: 0;
	list-style: none;
}

.navbar .nav-link {
	font-size: 0.9rem;
	font-weight: 500;
	color: var(--muted);
	padding: 0.4rem 0.75rem;
	border-radius: 8px;
	transition: color 0.2s, background 0.2s;
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
	color: var(--text);
	background: rgba(255, 255, 255, 0.05);
}

.mobile-nav-toggle {
	display: none;
	color: var(--text);
	font-size: 1.75rem;
	cursor: pointer;
	line-height: 1;
}

@media (max-width: 991px) {
	.mobile-nav-toggle {
		display: block;
	}

	.navbar ul {
		display: none;
	}

	.navbar-mobile {
		position: fixed;
		inset: 0;
		background: rgba(11, 15, 23, 0.97);
		z-index: 999;
	}

	.navbar-mobile .mobile-nav-toggle {
		position: absolute;
		top: 18px;
		right: 16px;
	}

	.navbar-mobile ul {
		display: flex;
		flex-direction: column;
		align-items: stretch;
		gap: 0.25rem;
		position: absolute;
		top: 72px;
		left: 16px;
		right: 16px;
		padding: 0.75rem;
		background: var(--surface);
		border: 1px solid var(--border);
		border-radius: var(--radius);
	}

	.navbar-mobile .nav-link {
		font-size: 1.05rem;
		padding: 0.75rem 1rem;
	}
}

/* ---------- Sections ---------- */

.section {
	padding: 6rem 0;
	border-top: 1px solid var(--border);
}

.section-title {
	margin-bottom: 3rem;
	max-width: 640px;
}

.eyebrow {
	display: block;
	font-family: var(--font-mono);
	font-size: 0.8rem;
	color: var(--accent);
	margin-bottom: 0.5rem;
}

.section-title h2 {
	font-size: clamp(1.9rem, 4vw, 2.6rem);
	margin-bottom: 0.5rem;
}

.section-title p {
	color: var(--muted);
	font-size: 1.05rem;
	margin: 0;
}

.card-surface {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 1.75rem;
	height: 100%;
	transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.card-surface.hoverable:hover {
	border-color: var(--border-strong);
	transform: translateY(-3px);
	box-shadow: 0 18px 40px -20px rgba(0, 0, 0, 0.8);
}

/* ---------- Hero ---------- */

.hero {
	position: relative;
	min-height: 100vh;
	display: flex;
	align-items: center;
	padding: calc(var(--header-height) + 3rem) 0 4rem;
	overflow: hidden;
}

.hero::before {
	/* Faint grid, faded out towards the edges */
	content: "";
	position: absolute;
	inset: 0;
	background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
	background-size: 56px 56px;
	mask-image: radial-gradient(ellipse at 50% 40%, #000 20%, transparent 70%);
	-webkit-mask-image: radial-gradient(ellipse at 50% 40%, #000 20%, transparent 70%);
	pointer-events: none;
}

.hero::after {
	/* Accent glow */
	content: "";
	position: absolute;
	width: 620px;
	height: 620px;
	top: -180px;
	right: -120px;
	background: radial-gradient(circle, rgba(76, 201, 240, 0.18), rgba(123, 140, 255, 0.08) 45%, transparent 70%);
	pointer-events: none;
}

.hero .container {
	position: relative;
	z-index: 1;
}

.hero-eyebrow {
	font-family: var(--font-mono);
	font-size: 0.9rem;
	color: var(--accent);
	margin-bottom: 1rem;
}

.hero-title {
	font-size: clamp(2.6rem, 7vw, 4.75rem);
	font-weight: 800;
	line-height: 1.05;
	letter-spacing: -0.035em;
	margin-bottom: 1rem;
}

.hero-role {
	font-size: clamp(1.2rem, 2.6vw, 1.6rem);
	font-weight: 600;
	margin-bottom: 1.25rem;
	background: linear-gradient(90deg, var(--accent), var(--accent-2));
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
}

.hero-lead {
	font-size: 1.15rem;
	color: var(--muted);
	max-width: 560px;
	margin-bottom: 2rem;
}

.hero-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.75rem;
}

.hero-photo {
	position: relative;
	width: min(300px, 70vw);
	aspect-ratio: 1;
	margin: 0 auto;
}

.hero-photo::before {
	content: "";
	position: absolute;
	inset: -6px;
	border-radius: 50%;
	background: conic-gradient(from 200deg, var(--accent), var(--accent-2), transparent 60%, var(--accent));
	opacity: 0.8;
}

.hero-photo img {
	position: relative;
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: 50% 20%;
	border-radius: 50%;
	border: 6px solid var(--bg);
}

/* ---------- About ---------- */

.about-text p {
	font-size: 1.1rem;
	color: var(--muted);
}

.about-text strong {
	color: var(--text);
	font-weight: 600;
}

.fact-grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 1rem;
}

.fact {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 1.25rem;
}

.fact-value {
	font-size: 1.5rem;
	font-weight: 700;
	line-height: 1.2;
	color: var(--text);
}

.fact-label {
	font-family: var(--font-mono);
	font-size: 0.75rem;
	color: var(--muted);
	margin-top: 0.35rem;
}

.cert {
	display: flex;
	align-items: center;
	gap: 1rem;
	margin-top: 1.5rem;
	padding: 1rem 1.25rem;
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	color: var(--text);
}

.cert:hover {
	border-color: var(--accent);
	color: var(--text);
}

.cert img {
	width: 56px;
	height: 56px;
	object-fit: contain;
	flex-shrink: 0;
}

/* ---------- In production ---------- */

.project-head {
	display: flex;
	align-items: flex-start;
	justify-content: space-between;
	gap: 1rem;
	margin-bottom: 1rem;
}

.project-icon {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 44px;
	height: 44px;
	border-radius: 12px;
	background: var(--accent-soft);
	color: var(--accent);
	font-size: 1.25rem;
	flex-shrink: 0;
}

.project-title {
	font-size: 1.25rem;
	margin: 0.9rem 0 0.25rem;
}

.project-link {
	font-family: var(--font-mono);
	font-size: 0.85rem;
}

.project-desc {
	color: var(--muted);
	margin: 1rem 0;
}

.project-points {
	list-style: none;
	padding: 0;
	margin: 0 0 1.5rem;
}

.project-points li {
	position: relative;
	padding-left: 1.25rem;
	margin-bottom: 0.6rem;
	font-size: 0.93rem;
	color: var(--text);
}

.project-points li::before {
	content: "▸";
	position: absolute;
	left: 0;
	color: var(--accent);
}

/* ---------- Skills ---------- */

.skill-card {
	display: flex;
	gap: 1rem;
	align-items: flex-start;
}

.skill-card i {
	font-size: 1.4rem;
	color: var(--accent);
	line-height: 1.2;
}

.skill-card h3 {
	font-size: 1.05rem;
	margin-bottom: 0.25rem;
}

.skill-card p {
	font-size: 0.92rem;
	color: var(--muted);
	margin: 0;
}

/* ---------- Experience timeline ---------- */

.timeline {
	position: relative;
	list-style: none;
	margin: 0;
	padding: 0 0 0 2rem;
}

.timeline::before {
	content: "";
	position: absolute;
	top: 8px;
	bottom: 8px;
	left: 6px;
	width: 2px;
	background: linear-gradient(var(--accent), var(--border) 60%);
}

.timeline-item {
	position: relative;
	margin-bottom: 1.5rem;
}

.timeline-item::before {
	content: "";
	position: absolute;
	left: calc(-2rem + 1px);
	top: 1.9rem;
	width: 12px;
	height: 12px;
	border-radius: 50%;
	background: var(--bg);
	border: 2px solid var(--accent);
}

.timeline-item.current::before {
	background: var(--accent);
	box-shadow: 0 0 0 6px var(--accent-soft);
}

.job-head {
	display: flex;
	gap: 1rem;
	align-items: center;
	margin-bottom: 1rem;
}

.job-logo {
	width: 56px;
	height: 56px;
	flex-shrink: 0;
	border-radius: 12px;
	background: #fff;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 8px;
}

.job-logo img {
	max-width: 100%;
	max-height: 100%;
	object-fit: contain;
}

.job-title {
	font-size: 1.15rem;
	margin: 0;
}

.job-meta {
	font-family: var(--font-mono);
	font-size: 0.8rem;
	color: var(--muted);
}

.job-desc {
	color: var(--muted);
	margin-bottom: 1.25rem;
	white-space: pre-line;
}

.subsection-title {
	font-size: 1.3rem;
	margin: 3.5rem 0 0.35rem;
}

.freelance-card h4 {
	font-size: 1.05rem;
	margin-bottom: 0.25rem;
}

.freelance-card .job-desc {
	font-size: 0.9rem;
}

/* ---------- Learning ---------- */

.search-box {
	position: relative;
	max-width: 480px;
	margin-bottom: 2rem;
}

.search-box i {
	position: absolute;
	left: 1rem;
	top: 50%;
	transform: translateY(-50%);
	color: var(--muted);
}

.search-box input {
	width: 100%;
	background: var(--surface);
	border: 1px solid var(--border-strong);
	border-radius: 10px;
	color: var(--text);
	padding: 0.75rem 1rem 0.75rem 2.6rem;
	font-size: 0.95rem;
	outline: none;
	transition: border-color 0.2s, box-shadow 0.2s;
}

.search-box input::placeholder {
	color: var(--muted);
}

.search-box input:focus {
	border-color: var(--accent);
	box-shadow: 0 0 0 3px var(--accent-soft);
}

.course-card {
	padding: 1.25rem;
	display: flex;
	flex-direction: column;
	gap: 0.6rem;
}

.course-card h3 {
	font-size: 1rem;
	line-height: 1.4;
	margin: 0;
}

.course-meta {
	font-family: var(--font-mono);
	font-size: 0.75rem;
	color: var(--muted);
}

.course-desc {
	font-size: 0.88rem;
	color: var(--muted);
	margin: 0;
	display: -webkit-box;
	-webkit-line-clamp: 3;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.course-card .chip {
	align-self: flex-start;
	margin-top: auto;
	color: var(--accent);
}

.empty-state {
	color: var(--muted);
	font-family: var(--font-mono);
	font-size: 0.9rem;
}

/* ---------- Contact & footer ---------- */

.contact {
	text-align: center;
	position: relative;
	overflow: hidden;
}

.contact::before {
	content: "";
	position: absolute;
	width: 700px;
	height: 400px;
	left: 50%;
	bottom: -220px;
	transform: translateX(-50%);
	background: radial-gradient(ellipse, rgba(76, 201, 240, 0.14), transparent 70%);
	pointer-events: none;
}

.contact .container {
	position: relative;
}

.contact h2 {
	font-size: clamp(2.4rem, 6vw, 4rem);
	font-weight: 800;
	letter-spacing: -0.035em;
	margin-bottom: 1rem;
}

.contact p {
	color: var(--muted);
	font-size: 1.1rem;
	max-width: 520px;
	margin: 0 auto 2rem;
}

.contact-email {
	display: inline-block;
	font-family: var(--font-mono);
	font-size: clamp(1rem, 3.2vw, 1.6rem);
	color: var(--text);
	border-bottom: 2px solid var(--accent);
	padding-bottom: 0.25rem;
	margin-bottom: 2rem;
	word-break: break-all;
}

.contact-email:hover {
	color: var(--accent);
}

.contact-links {
	display: flex;
	justify-content: center;
	gap: 0.75rem;
}

.site-footer {
	border-top: 1px solid var(--border);
	padding: 2rem 0;
	font-size: 0.85rem;
	color: var(--muted);
}

.site-footer p {
	margin: 0;
}

/* ---------- Small screens ---------- */

@media (max-width: 767px) {
	.section {
		padding: 4.5rem 0;
	}

	.card-surface {
		padding: 1.35rem;
	}

	.hero {
		min-height: auto;
		padding-top: calc(var(--header-height) + 2rem);
	}

	.hero-photo {
		width: 180px;
		margin: 0 0 2rem;
	}

	.hero-actions .btn-accent,
	.hero-actions .btn-ghost {
		flex: 1 1 auto;
		justify-content: center;
	}

	.timeline {
		padding-left: 1.5rem;
	}

	.timeline-item::before {
		left: calc(-1.5rem + 1px);
	}
}

@media (prefers-reduced-motion: reduce) {
	* {
		transition: none !important;
	}
}